migratory birds are most often responsible for the distribution of avian diseases in different areas and serve as hosts for most parasites, including ectoparasites. the aim of the present study was to record the distribution range of a mesostigmatic mite species, dermanyssus gallinae in barn swallow nests in urmia suburb, north west of iran. the samples were collected from 161 bird nests in 44 ...

BACKGROUND The aim of this study was to investigate the effects of smokeless tobacco (Maras powder, Nicotiana rustica Linn) on carotid intima media thickness. MATERIAL/METHODS The study included 32 Maras powder users presenting to our Family Medicine outpatient clinic and 30 non-users of Maras powder as a control group. Carotid intima media thickness was measured by duplex ultrasonography. ...

Heat stress inhibits photosynthesis by reducing the activation of Rubisco by Rubisco activase. To determine if loss of activase function is caused by protein denaturation, the thermal stability of activase was examined in vitro and in vivo and compared with the stabilities of two other soluble chloroplast proteins. Isolated activase exhibited a temperature optimum for ATP hydrolysis of 44 degre...

Mancera et al., 1999). The reappearance of chlorophyll (Chl ) correlated with the reappearance of the Chl biosynSingle senescent leaves attached to decapitated thesis enzyme, NADPH-protochlorophyllide oxidoreducshoots of Nicotiana rustica L. regreened, especially tase (POR). Development of functional thylakoid when treated with cytokinin. Regreening caused an membranes during regreening was ind...

Commelina communis stomata closed within 1 h of transferring intact plants from 27 degrees C to 7 degrees C, whereas tobacco (Nicotiana rustica) stomata did not until the leaves wilted. Abscisic acid (ABA) did not mediate cold-induced C. communis stomatal closure: At low temperatures, bulk leaf ABA did not increase; ABA did not preferentially accumulate in the epidermis; its flux into detached ...

This paper aims to elucidate the structure and design of radulae of 2 species of limpet, namely Patella caerulea and P. rustica. Samples were examined by light microscope and SEM. Although the general formula is the same, the pattern of each dentition differed between the 2 species. General morphology and histology of odontophore showed structural significance of the organ, suggesting a further...